${\sigma }_{\alpha }^2$

0.25

0.5

1

2

4

CMMP-SPSRs

0.0921

0.1205

0.3383

0.6160

0.6863

RP

0.1849

0.5785

1.7598

3.8079

5.1960

%Improve

100.74

379.90

420.21

518.22

657.05